F02D 19/06
Peculiar to engines working with pluralities of fuels
Official title: peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
F02D19/06 (Peculiar to engines working with pluralities of fuels) appears on 2,654 US grants and 2,800 published applications in this corpus.
Search patents in F02D- Granted patents
- 2,654
- Published applications
- 2,800
- Assignees
- 706
- Inventors
- 4,061
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 19 | 0 |
| 1984 | 9 | 0 |
| 1985 | 17 | 0 |
| 1986 | 11 | 0 |
| 1987 | 9 | 0 |
| 1988 | 5 | 0 |
| 1989 | 12 | 0 |
| 1990 | 27 | 0 |
| 1991 | 23 | 0 |
| 1992 | 26 | 0 |
| 1993 | 34 | 0 |
| 1994 | 18 | 0 |
| 1995 | 20 | 0 |
| 1996 | 21 | 0 |
| 1997 | 8 | 0 |
| 1998 | 20 | 0 |
| 1999 | 27 | 0 |
| 2000 | 28 | 0 |
| 2001 | 29 | 2 |
| 2002 | 27 | 33 |
| 2003 | 29 | 37 |
| 2004 | 32 | 43 |
| 2005 | 30 | 40 |
| 2006 | 37 | 48 |
| 2007 | 46 | 82 |
| 2008 | 59 | 100 |
| 2009 | 55 | 143 |
| 2010 | 98 | 151 |
| 2011 | 95 | 146 |
| 2012 | 103 | 136 |
| 2013 | 102 | 179 |
| 2014 | 118 | 219 |
| 2015 | 152 | 210 |
| 2016 | 160 | 188 |
| 2017 | 171 | 141 |
| 2018 | 130 | 126 |
| 2019 | 140 | 163 |
| 2020 | 145 | 97 |
| 2021 | 136 | 81 |
| 2022 | 84 | 69 |
| 2023 | 97 | 83 |
| 2024 | 94 | 88 |
| 2025 | 89 | 112 |
| 2026 | 41 | 83 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F02D 19/08Simultaneously using pluralities of fuels1,753
- F02D 19/0639Characterised by the type of fuels1,446
- F02D 19/0663Details on the fuel supply system1,354
- F02D 19/0602Control of components of the fuel supply system918
- F02D 19/0626Measuring or estimating parameters related to the fuel supply system596
- F02D 19/0623Failure diagnosis or prevention191
- F02D 19/066Retrofit of secondary fuel supply systems112
Recent patents
- Engine device6 Oct 2026US 12,753,713 B2Yanmar Holdings Co., Ltd.
- Controller for a fuel supply system29 Sep 2026US 12,747,709 B2Toyota Jidosha Kabushiki Kaisha
- Injectors, methods, and systems for dual fuel combustion22 Sep 2026US 12,742,428 B2
- Hydrogen mixed-combustion electronic control device and power generation system using same15 Sep 2026US 12,736,014 B2Hitachi, Ltd.
- Systems and methods for controlling cylinder combustion in a dual fuel engine using in-cylinder pressure sensing8 Sep 2026US 12,729,654 B2Caterpillar Inc.
- Multi-fuel engine system and method for controlling same8 Oct 2026US 2026/0309102 A1Hd Hyundai Heavy Industries Co., Ltd.
- Controller and control method1 Oct 2026US 2026/0298166 A1Toyota Jidosha Kabushiki Kaisha
- Calibration system and method for fuel injection calibration24 Sep 2026US 2026/0286912 A1Cummins Power Generation Inc.
- Multi-stage emission system for large displacement compression ignition non-road diesel, diesel-natural gas or alternative fuel mixture generator systems for emergency and non-emergency stationary power applications17 Sep 2026US 2026/0275892 A1Bluefin ESI, Inc.
- Control device and method for internal combustion engine17 Sep 2026US 2026/0275923 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
Most cited
By later US patents
- Bi-fuel control system and retrofit assembly for diesel engines231US 6,543,395 B2Gas Technologies LLC · 2003
- Method and apparatus for operating a dual fuel internal combustion engine226US 7,627,416 B2Westport Power Inc. · 2009
- Methods and apparatus for operation of multiple fuel engines199US 7,222,015 B2Engine Control Technology, LLC · 2007
- Premixed charge compression ignition engine with optimal combustion control196US 6,276,334 B1Cummins Engine Company, Inc. · 2001
- System comprising duel-fuel and after treatment for heavy-heavy duty diesel (HHDD) engines180US 10,287,943 B1Clean Power Technologies, LLC · 2019